(Corrects Dec. 18 report to change name of firm to Polaris
Greystone Financial Group from Polaris Wealth Advisers in
paragraph 4)

* Boeing biggest drag on Dow

* Disney falls after rating cut

* Indexes down: Dow 1.15 pct, S&P 0.88 pct, Nasdaq 0.62 pct

By Abhiram Nandakumar

Dec 18 (Reuters) - Wall Street was lower in morning trading,
with the Dow shedding about 200 points, on "quadruple witching"
Friday as crude prices headed for their third straight weekly
loss.

Volatility was slightly higher than usual on account of
"quadruple witching," the expiry of options on stocks and
indexes as well as futures on indexes and single stocks.

Still, the S&P 500 and Nasdaq were set for their best weekly
performance in a month, helped by gains before the Federal
Reserve's interest rate hike on Wednesday.

"I look at it as purely a sentiment-driven market. There's
no new news that's any kind of substance that's driving this,"
said Jeff Powell, managing partner of Polaris Greystone
Financial Group in California.
Continuación...